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| author | Ram Pai <linuxram@us.ibm.com> | 2018-01-19 02:50:24 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-20 11:45:03 +0100 |
| commit | 92e3da3cf193fd27996909956c12a23c0333da44 (patch) | |
| tree | fde2278b3811f2d9a7483cd635bd1d4007a82545 /arch/powerpc/Kconfig | |
| parent | cxl: Add support for ASB_Notify on POWER9 (diff) | |
| download | linux-92e3da3cf193fd27996909956c12a23c0333da44.tar.xz linux-92e3da3cf193fd27996909956c12a23c0333da44.zip | |
powerpc: initial pkey plumbing
Basic plumbing to initialize the pkey system.
Nothing is enabled yet. A later patch will enable it
once all the infrastructure is in place.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
[mpe: Rework copyrights to use SPDX tags]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index c51e6ce42e7a..c9660a18c093 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -867,6 +867,21 @@ config SECCOMP If unsure, say Y. Only embedded should say N here. +config PPC_MEM_KEYS + prompt "PowerPC Memory Protection Keys" + def_bool y + depends on PPC_BOOK3S_64 + select ARCH_USES_HIGH_VMA_FLAGS + select ARCH_HAS_PKEYS + help + Memory Protection Keys provides a mechanism for enforcing + page-based protections, but without requiring modification of the + page tables when an application changes protection domains. + + For details, see Documentation/vm/protection-keys.txt + + If unsure, say y. + endmenu config ISA_DMA_API |